ion column

ion column

[′ī‚än ‚käl·əm]
(geophysics)
The trail of ionized gases in the trajectory of a meteoroid entering the upper atmosphere; a part of the composite phenomenon known as a meteor. Also known as meteor trail.
References in periodicals archive ?
Delivery of the new ion column for SEM LYRA 3, including additional equipment and control software and related installation of the required components on the existing scanning electron microscope Tescan Lyra 3 XMH (S / N: MI3231471CZ) owned by the contracting authority.
A two-stage differentially pumped ion column to ensure the high-fidelity transfer of a pattern under all vacuum conditions.
For example, using a gallium liquid metal ion (LMI) source in a single-lens, 25-keV focused ion column will produce a 100-nm-dia beam with current densities of up to 0.7 A/CM 2.
- A scanning electron microscope (SEM) coupled with an ion column (FIB) machining for nano-and a gas injection system for welding
Contract notice: Contract for supply and installation of a scanning electron microscopy field emission (fegsem) with focused ion column (fib)
With flexible working hours, part-time and special support measures be taken to ensure that it is possible to combine work and family well.: The Institute of Materials Research of the German Aerospace Center and Space Travel intends to Focused-Ion-Beam/Rasterelektronenmikroskop-Kombination with the following specifications to procure:: Requirement for Focused-Ion-Beam/Rasterelektronenmikroskop-Kombination Cologne:: - Electron and ion column: - Resolution at optimal working distance:: o electron microscopy at 30 keV no worse than 1 nm: o keV electron microscopy BEI15 no worse than 1.3 nm: o electron microscopy at 1 keV no worse than 2 nm: - Resolution on the point of intersection:: o Visually ions at 30 keV no worse than 4 nm: - Equipment for cutting electrically insulating samples wi
The centers of two of the hexagonal type II rods are occupied by the column [Ca.sup.2+] ions, while a third set of hexagonal centers is occupied by the [OH.sup.-] ion columns instead of cation columns, thus leading to the unusual stoichiometry.